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Semester 2011B Time Distribution

Gemini North: Time Availability and Distribution

A minimum of 88% of the time will be available for science use on Gemini North in 2011B. This amounts to 162 nights and includes 1.5 nights for GMOS-N CCD demonstration science. The remaining time will be used for observatory maintenance tasks and commissioning of GMOS with the new CCDs. Any unused engineering time will be returned to science. Note that historically around 5% of each semester's science time is used to complete highly ranked programs from the previous two semesters to which the ITAC granted rollover status. The number of hours allocated to each partner in 2011B is given in the following table.

Partner Estimated Hours Available
US 613
UK 278
Canada 200
Australia 102
Argentina 19
Brazil 54
Univ. of Hawaii (host)
176
Gemini Staff
162
Total
1604 (=160.5n)

Gemini South: Time Availability and Distribution

A minimum of 78% of the time will be available for science use on Gemini South in 2011B. This amounts to 144 nights, and includes 90 hours of NICI campaign science, which are distributed across the partners that participate in the campaign. The remaining time will be used for observatory maintenance tasks, and Flamingos-2 and GSAOI commissioning activities. Any unused engineering time will be returned to science. Note that historically around 5% of each semester's science time is used to complete highly ranked programs from the previous two semesters to which the ITAC granted rollover status. The number of hours allocated to each partner in 2011B is given in the following table.

Partner Estimated Hours Available
US 493
UK 217
Canada 162
Australia 92
Argentina 15
Brazil 50
Chile (host) 179
Gemini Staff
137
Total
1345 (=135n)

Time Adjustments

To maintain overall balance amongst the partnership, the values shown above for both Gemini North and South have been adjusted from the nominal partner shares as a result of actual time charged through 2010B. The time allocations also include a purchase by Brazil of 35 hours of UK time at each telescope. The values shown in the tables above were recommended by the Operations Working Group in February 2011. The number of nights is approximated by int(hours/10).